Spark-arrester.



PATENTED DEC. 19, 1905.

B. LUXENBERG.

SPARK ARRESTER. I

APPLICATION FILED APE.7,1905. t

Tize5aea fxu/euiim I Bruno Zuxen 56237.

I v I I UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented Dec. 19, 1905.

Application filed April 7,1905. Serial No. 254,286.

To all whom, it may concern.-

Be it known that I, BRUNO LUXENBERG, a citizen of the German Empire, and a resident of WVolfshagerstrasse 2, Cassel,Germany,have invented certain new and useful Improvements in Spark-Arresters, of which the following is a specification.

Spark-arresters have heretofore been made of various constructions; but while some of them are not very reliable, work imperfectly, and suffer under the disadvantage that the sparks arrested drop back through the smokestack into the uptake, from which they have to be removed from time to time, others are too complicated in construction and too expensive to be of any economic advantage.

My invention relates to a spark arrester which is plain in construction and absolutely sure to prevent the escape of any sparks ascending in the smoke-stack without permitting their dropping back into the same.

In describing my said invention 1 refer to the drawings herewith, in which- Figure l is a side elevation of a spark-arrester constructed in accordance with my invention. showing the same' mounted on a smoke-stack, the latter being broken away. Fig. 2 is a vertical sectional view of the same,

showing a part of the boiler of a locomotive.

On top of the smoke-stack a is mounted my improved spark-arrester 7), which resembles in shape a hood and is secured in such Way that it may be turned and adjusted by means of grips for by any other suitable means to suit the direction of the draft of air. The arrester is provided with a screen 0, which prevents a direct escape into the open air of the sparks ascending through the stack, has a curved stay (Z to increase its rigidity, and may be secured at 6 either rigidly or so as to permit a turning round in peripheral direction. There are further provided, opposite to such screen, a series of thin slats 7e, mounted above and overlapping each other, as in a Venetian blind, which swing on the pivot e, and thus enable the varying of the inclination of the screen 0. By this arrangement the smokestack may be adjusted in such way that the screen is adverse to the direction in which the engine moves, the draft produced by the rapid movement of the latter becomes more intense, and actually draws the sparks out of the smokestack and throws them against the screen, which extends quite a distance beyond the orifice of the stack. From the said screen the sparks drop into a suitable receptacle provided below.

The section b may be supported on the upper end of the smoke-stack a by an interior annular flange a, or for the better securement of the device the top of the smoke-stack may be provided with barbed springs 9, adapted to engage in corresponding openings in or on the arrester, or the said barbed springs may be provided on the latter and the top of the stack with corresponding openings. To reverse the smoke-stack, that the hood 0 will-project in the opposite direction to that shown, the barbed springs g are depressed, so as to allow of the turning of section b on the smokestack a.

hat I claim as my invention, and desire to protect by Letters Patent, is

1. The combination with a smoke-stack, of a spark-arrester comprising a section telescop- ,ing the upper end of said stack, a series of extensible slat-sections pivoted to said telescoping section, and a screen carried by the outermost slat-section.

2. The combination with a smoke-stack, of a spark-arrester comprising a telescoping section, means for securing said section to the smoke-stack, a plurality of slat-sections pivoted to the telescoping section, and a hooded screen carried by the outermost slat-section, substantially as described.

In testimony whereof I have hereunto signed my name in the presence of'two Witnesses. BRUNO LUXENBERG. Witnesses:

ROBERT SCHRIBNER, ALFRED TEIGHMANN. 

